I've been following Dion Hinchliffe for some time. If ever you wanted to get the inside track on what Social Business (or it's precursor - Enterprise 2.0) is all about, then check out Dion's blog - and books!
Everything is going social. Whether it’s merely the addition of sharing buttons on content within an existing app, or if it’s a fundamental reworking of a customer support system to be powered by mass community participation instead of trouble tickets, social is infusing our work environment in ways too numerous to count.
The architectural view presented here only goes down to a certain level of detail, yet it’s one of the most updated views of social business architecture available.